✓ Two crowns ✓ Same mass, different density ✓ Vertical slider ✓ Slider works ✓ Slider controls crowns — Slider direction correct ✓ Full slider range — Fall animation ✓ Water displacement ✓ Rising water level ✓ Splash effects ✓ Physics correct ✓ Live mass value ✓ Live volume value ✓ Live density value ✓ Live displaced water ✓ Gilded displaces more ✓ Heureka animation ✓ No external deps ✓ Light bg / dark text ✓ Self-contained HTML
Slider direction is inverted (CSS rotate(-90deg) on a min=0/max=100 slider means dragging up increases value and submerges crowns, opposite of the spec); no discrete fall animation (crowns move linearly with slider, no freefall physics).
12,837 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (CSS rotate(-90deg) on a min=0/max=100 slider means dragging up increases value and submerges crowns, opposite of the spec); no discrete fall animation (crowns move linearly with slider, no freefall physics).